Download Types of Community Interactions

Bell Ringer
• Draw a food chain with at least 5
organisms
– 1 producer
– 4 consumers (1 should be a
decomposer)
• Label the trophic levels.
Types of Community
Interactions
Competition
Predation
Symbiosis
Competition—interaction in which
organisms
of the same or different
Competition
species attempt to use the same
ecological resource in the same
place at the same time.
Predation—interaction in which
one organism captures, KILLS,
Predation
and feeds on another organism.
Symbiotic Relationships
Symbiosis- two species living together
http://www.youtube.com/watch?v=zSmL2F1t81Q
3 Types of
symbiosis:
1. Commensalism
2. Parasitism
3. Mutualism
Symbiotic Relationships
Commensalismone species benefits
and the other is
neither harmed nor
helped
Ex. orchids on a tree
Epiphytes: A plant, such as a tropical orchid
or a bromeliad, that grows on another plant
upon which it depends for mechanical support
but not for nutrients. Also called xerophyte,
air plant.
Symbiotic Relationships
Commensalismone species benefits
and the other is
neither harmed nor
helped
Ex. polar bears and
cyanobacteria
Commensalism
Whale & Barnacles
Shark & Remora
Symbiotic Relationships
Parasitismone species benefits (parasite) and
the other is harmed (host)
• Parasite-Host relationship
Symbiotic Relationships
Parasitism- parasite-host
Ex. lampreys,
leeches, fleas,
ticks, tapeworm,
Not considered predator-prey
because goal is not to KILL host
Symbiotic Relationships
Mutualism- beneficial to both species
Cleaner Shrimp & Fish
Bee & Flower
Mutualism
Egyptian
Plover
&
Crocodile
Symbiotic Relationships
Mutualismbeneficial to both species
Fungus
+
Bluegreen
Algae
Lichen
Type of
Species
relationship
harmed
Commensalism
Parasitism
Mutualism
= 1 species
Species
benefits
Species
neutral